Since the 1st episode this season, I continue to have a suspicion that Syd knows Vaughn isn't dead. For one, Syd never says he's dead, just "gone" or "not here" (like when she talks to her Dad). She also didn't throw away his magazine, and in the baby store, she says, "He wishes he could do more", then she has her baby listen to Vaughn's voice. Now, I realize t hat she would say these things even if he were dead, but it also could be foreshadowing. Despite all the rumors, I think he's coming back, bc it would be horrible judgment for him not too. Even if not everyone is a fan of S/V or Vaughn, it has significantly decreased ratings. I hope if he does come back, it significantly increases ratings, so that people know! Anyways, I think that
1. Syd will somehow bring down whoever she needs to bring down to make it safe for Vaughn to come back. We'll get some crazy reveal that he's alive and Jack will go get Vaughn for Syd. Maybe Vaughn will show up to save Syd in some situation. Either that or,
2. Jack and Dixon will have been hidding Vaughn, waiting for it to be safe before telling Syd he's still alive. Remember, Jack can hide anyone. Jack will find some way of letting Vaughn see his baby born.